Jules george dreyfus



J. G.. DREYFUS. Lamp-Chimneyv Cap.

Patehted May 4, 1869.

N, PETE PhoioLillwynph-r. Wahlllglnn. Dv C- sumed by the burner-flame.

, united swag paw A Gtfiflire.

JUL'ESGEORGE DREYF'U s, orNEW Yo K,.N.' Y."

"Letters Patent No. 89,743, dated May 4,1869. i

QAPI'OR'LAMP-CEIMNBY. I

Tcallwhomitmaycomem: i

Be it known that I, J iinns Gnonen DBEYFUS, of s the city, county, and State of New York, have invented a new and useful Gap forOhimneys'to Gas and Lamp- U Burners, of which the following is a full, clear, and

exact description, reference being bad to the accompanying drawing, forming part of this specification, and

in whichv Figures 1 and 2 represent vertical sections of a gas buruer, or lamp-chimney, as applied to'a burner, and with my invention applied to it under two 'difi'erent forms or styles of construction; and

Figures 3 and 4, plans or top views of the same.

' i Similar lettersof reference indicate corresponding,

parts.

This my invention is applicable to chimneys of various kinds or shapes and materials fitted to or over gas-burners, kerosene, and "other lamps. It will suffice here, however, to describe the improvement in connection with the burning of the ordinary coal-gas used forilluminating-purposes, though the same may be employed with like efl'ect in the combustion of other gases, whether produced from solids or fluids.

The invention consists in a cap made in one piece, of porcelain or enamelled ware, arranged to fit on or within the top of the chimneyfto the burner, in such manner as to be carried by saidchimney, and so constructed as that while, by, suitable perforations or openings made in it, provision is made for keeping up the draught and forescape of the gaseous products I of combustion, unconsumed gas escaping from the burner up the sides of the chimney is deflected or turned back again down the chimney, so as to be con- The advantages ofan appendage of this description will be readily seen when it is considered that there has heretofore been not only much wasteor loss of gas from the escape of it from the burner outside of the flame, and creeping of it withoutbeing consumed up the sides of the chimney and out through the top of the latter, but the deleterious effects of such'escaping gas are oftentimes serious, both on the health of The schedulavr efen-ed to in these Letters Patent and making part of the came which are apt to be tarnished or injured by it.

These bad eflects my invention obviates, doing away with the disagreeable odor too attendant upon the esthere will be found much economy and a stronger or intenser light without objectionable smoke or heat.

Referring to the accompanying drawiu'g A represents a lamp or gas-burner chimney, fitted or applied to a burner, B, of any suitable description.

may either be madeto enter the upper portion of the chimney, as in fig. 1, or to embrace the chimney on the outside, as in fig. 2, andwhich, while it may be of I varied configuration, is constructed to-present any draught, and to provide for the escape of any gaseous products of combustion, with a shield ordeflectingsurface, b, arranged to lie over the central portionof the chimney, so that any unconsu ned gas creeping up the the sides of or within the chimney will be caused to strike said shield'and be reverted or made a ,to descend the' chimney, so as to be consumed by the I am aware that devices somewhat similar have been used heretofore, but they are constructed of mica, or other refractory substance, and being generally exposed, unsightly, and oftentimes expensive; such, therefore, I do not claim, What is here claimed, and desired to be secured by Letters Patent, is Aporcelain or enamelled chimney-cap, b c','with perforations a, constructed as shown and described, as a new article of manufacture.

J ULES GEORGE DBEYFUS, Witnesses:

FRED. Hams, J omv D. RosnLL.

those eizpcsed to it and on various articles or goods, 7

cape of unconsumed gas, and by the adoption of it,

On the top of this chimney is seated or fitted, prefer-, ably in a loose or detachable manner, .a cap, 0, which suitable number of openings, a, for keeping up the]- made of unsuitable forms forpractical' use, are destructible from the intense heat to which they are 

